Senior Buyer

Amentum is seeking a Senior Buyer in Springfield, VA .

You are well-organized, detail-oriented, and appreciate a range of procurement tasks. You'll be responsible for all phases of purchase order administration, cradle to grave, including acquisition planning, source selection, cost/price analysis, negotiation, post-award administration and closeout. You are also responsible for ensuring compliance with government policies and procedures. You'll do all this using your excellent communication and negotiation skills.

Responsibilities:

• Establishes source of supply, negotiates price, delivery date, and other necessary commitments based upon authorized requisition and complies with company policies and federal regulations.

• Provides information to requester that includes communication of procurement actions or status and assistance with special requirements.

• Adheres to Supply Chain Procurement procedures to ensure follow-up and administration of purchase order files.

• Reviews and processes purchase requisitions.

• Contacts suppliers, secures bids and executes purchase orders in accordance with Amentum procedures.

• Evaluates proposals and quotations, determine offer responsiveness, responsibility, and eligibility for award, and perform discussions and negotiations.

• Makes procurement decisions based on best value, price, schedule, and terms.

• Maintains procurement records in accordance with Contractor Purchasing System Review (CPSR) guidelines/controls.

• Ensures compliance with FAR/DFARS, Agency-specific regulations and Amentum policies and procedures for subcontracts and procurement.

• Conducts purchase order file reviews in support of Government audits.

• Performs Purchase Order Closeouts.

• Ensure compliance with all site environmental health and safety requirements

Amentum is a global leader in advanced engineering and innovative technology solutions, trusted by the United States and its allies to address their most significant and complex challenges in science, security and sustainability. Our people apply undaunted curiosity, relentless ambition and boundless imagination to challenge convention and drive progress. Our commitments are underpinned by the belief that safety, collaboration and well-being are integral to success. Headquartered in Chantilly, Virginia, we have approximately 50,000 employees in more than 70 countries across all 7 continents.

Minimum Requirements:

• Master's degree, and at least 3 years of procurement/buyer experience

• Or a Bachelor's degree, and at least 5 years of procurement/buyer experience

• Or an Associates degree, and at least 7 years of procurement/buyer experience

• Or a High school diploma/GED, and at least 9 years of procurement/buyer experience

• Experience with various subcontract types (Cost-Plus, Fixed Price, Time & Materials, and subsets thereof)

• Advanced knowledge of SharePoint and Microsoft Office Suite

• Must have an Active Secret US Government Clearance. Note: US Citizenship is required to maintain a Secret Clearance.

Preferred Qualifications:

• Additional experience/education

Compensation Details:

$90,000 - $96,000

The compensation range or hourly rate listed for this position is provided as a good-faith estimate of what the company intends to offer for this role at the time this posting was issued. Actual compensation may vary based on factors such as job responsibilities, education, experience, skills, internal equity, market data, applicable collective bargaining agreements, and relevant laws.

Benefits Overview:

Our health and welfare benefits are designed to support you and your priorities. Offerings include:

• Health, dental, and vision insurance

• Paid time off and holidays

• Retirement benefits (including 401(k) matching)

• Educational reimbursement

• Parental leave

• Employee stock purchase plan

• Tax-saving options

• Disability and life insurance

• Pet insurance

Note: Benefits may vary based on employment type, location, and applicable agreements. Positions governed by a Collective Bargaining Agreement (CBA), the McNamara-O'Hara Service Contract Act (SCA), or other employment contracts may include different provisions/benefits.

Original Posting:

08/25/2026 - Until Filled

Amentum anticipates this job requisition will remain open for at least three days, with a closing date no earlier than three days after the original posting. This timeline may change based on business needs.

Amentum is proud to be an Equal Opportunity Employer. Our hiring practices provide equal opportunity for employment without regard to race, sex, sexual orientation, pregnancy (including pregnancy, childbirth, breastfeeding, or medical conditions related to pregnancy, childbirth, or breastfeeding), age, ancestry, United States military or veteran status, color, religion, creed, marital or domestic partner status, medical condition, genetic information, national origin, citizenship status, low-income status, or mental or physical disability so long as the essential functions of the job can be performed with or without reasonable accommodation, or any other protected category under federal, state, or local law. Learn more about your rights under Federal laws and supplemental language at Labor Laws Posters ( .